PAPR

说明：  通过并行压缩进行二维信号压缩，提出了一种利用并行压缩传感技术对二维信号进行压缩的新方案。根据这个原理，译码器的重新构造可以并行进行。通过对二维信号进行某些排列，可以确保所有列具有大致相同的密度级别，并且可以使用相同的测量矩阵进行采样。这样可以避免二维信号的矢量化，从而大大减小测量矩阵的尺寸。我们证明，如果排列良好，重建均方误差的上限会更紧。为了说明这一方案，我们将其应用于视频压缩并使用不同帧的排列有两种：参考帧的基于Z字形扫描的排列和非参考帧的基于块测试的排列。仿真结果表明，在相同的压缩比下，峰值信噪比比比在无置换情况下可提高3-7db左右。(we propose a new scheme to compress 2D signals using parallel compressed sensing. According to this seheme, the reeonstruction at the decoder can be performed in parallel. By performing certain permutation on a 2D signal, all columns are insured to have approximately the same density level and can be sampled using the same measurement matrix. In this way, vectorization of a 2D signal can be avoided, and thus the size of the measurement matrix can be dramatically reduced. We prove that with a good permutation, we can have a tighter upper bound on reconstruction mean square error. To illustrate this scheme, we apply it to video compression and use two kinds of permutations for different frames: the zigzag-scanbased permutation for reference frames and the block-test-based permutation for non-reference frames. Simulation results show that under the same compression ratio, the peak signal-to-noise ratio can be improved by approximately 3-7 dB compared to the case without permutation.)

移相键控的调制与解调matlab编程与实现(Phase shift keying modulation and demodulation matlab programming and the realization of)

Calculation of diffraction efficiency of rectangular phase grating (scalar theory)

matlab haar-like,包含积分图计算(matlab haar-like sum and compute)

从介绍功率谱的估计的理论基础入手，分析经典谱估计和现代谱估计，以及在Matlab中的实现方法。(Introduced the power spectrum from the estimated theoretical basics, analysis of classic and modern spectral estimation spectral estimation, as well as the realization of Matlab.)

Sliding Sum Averaging Filter Smoothes data by sliding it past itself, one sample at a time, and summing. The length of the output is the same as the length of the input. The output will be normalized. Equivalent to a moving average (lowpass) filter, but more efficient.

说明：  薛定宇《高等应用数学问题的MATLAB求解》(On Compensation &quot Higher Mathematics MATLAB to solve the problem&quot )

一些滤波器设计的MATLAB源代码，对于学习滤波器非常有用。(Some matlab codes to study filter design and it is helpful to understand filter.)

OFDM systems based on MATLAB simulation program

粒子滤波一个小演示源码，比较好用，有需要的赶紧下吧-Part.rar(Particle filter a small demonstration source, relatively easy, there is a need to quickly lower right-Part.rar)